CS8411 datasheet(4/38 Pages) CIRRUS

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CS8411 CS8412

DS61F1

DIGITAL CHARACTERISTICS - RS422 RECEIVERS (RXP, RXN pins only; VD+ = 5V ±

10%)

Notes: 4. VCM - Input Common Mode Range

5. When the receiver inputs are configured for singe ended operation (e.g. consumer configuration) the

signal amplitude must exceed 400m Vp-p for the differential voltage on RXP to RXN to exceed 200mV.

This represents twice the minimum signal level of 200 mVp-p specified in CP340/1201 and IEC-958

(which are not RS-422 compliant).

SWITCHING CHARACTERISTICS - CS8411 PARALLEL PORT (T

A = 25 °C for suf-

fixes '-CP' and '-CS'; TA = -40 to 85 °C for suffixes '-IP' and '-IS'; VD+, VA+ = 5V ± 10%; Inputs: Logic 0 = DGND,

logic 1 = VD+; CL = 20 pF)

Parameter

Symbol

Min

Typ

Max

Unit

Input Resistance

(-7V < VCM < 7V)

Note 4

ZIN

Ω

Differential Input Voltage, RXP to RXN (-7V < VCM < 7V)

Note 4,5

VTH

200

Input Hysteresis

VHYST

Parameter

Symbol

Min

Typ

Max

Unit

ADDRESS valid to CS low

tadcss

13.5

CS high to ADDRESS invalid

tcsadh

0ns

RD/WR valid to CS low

trwcss

CS low to RD/WR invalid

tcsrwi

CS low

tcsl

DATA valid to CS rising

RD/WR low (writing)

tdcssw

CS high to DATA invalid

RD/WR low (writing)

tcsdhw

0ns

CS falling to DATA valid

RD/WR high (reading)

tcsddr

CS rising to DATA Hi-Z

RD/WR high (reading)

tcsdhr

5ns

A4 - A0

D7 - D0

RD/WR

Writing

Reading

adcss

csddr

csl

dcssw

csdhw

csdhr

csadh

D7 - D0

RD/WR

csrwi

rwcss

CS8411 Parallel Port Timing

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